I know there are a group of traditional splitter friendly schools, but will the decrease in applicants push some high gpa stingy schools to be more relaxed towards sub 3.0 gpa applicants that are above their LSAT medians?

This is going to depend on how many people took the October LSAT / take the December LSAT. One thing though, a few schools that aren't splitter-friendly aren't likely to be affected as much by further decreases in the applicant pool because their LSAT medians aren't as high, like Berkeley and Cornell.

It's difficult to predict how various schools will react to fewer applicants, but relaxing GPA-25ths is not an unreasonable assumption.

If you're a splitter, best bet is to apply broadly and see what your options work out to. Are you worried about application fees?

If so, limit your search to T7-14 + any T1 schools that place into the regions that you're hoping to practice / have ties to. That should cut down your fees to <$1000, even without any waivers. Depending on your LSAT score, consider an ED application to places like UVA, Penn, Michigan, and Georgetown.